package day13.tarena.com;
import java.util.*;
public class Test {
		public static void main(String args[]){
				Set set = new HashSet();
				Student s1 = new Student(1,"zhang");
				Student s2 = new Student(2,"zhang");
				Student s3 = new Student(3,"zhang");
				Student s4 = new Student(4,"zhang");
				Student s5 = new Student(5,"zhang");
		}
}
